Quote Originally Posted by jp498 View Post
Skin shows filtration quite a bit; observe the freckles between film types. Both unfiltered. More blue sensitivity would make blemishes/freckles more prominent.

here's tmax 400:

here's foma 100:
I assume this is the same girl in both shots? If so and based on the freckles maxim then Foma is definitely not the stuff to use for clouds when you have forgotten your filter. I wonder how much yellow filtration would be required with a Foma film to match the sky produced by an unfiltered TMax film? The difference in the freckles prominence is amazing